diff --git a/unittests/test_connection.py b/unittests/test_connection.py
index df61d4c439ade9ae231f6a110eb02ad7f7f5bbd0..c5a375063936ec0fd94f15605763d384cb4b3c4d 100644
--- a/unittests/test_connection.py
+++ b/unittests/test_connection.py
@@ -247,7 +247,7 @@ def test_bad_implementation_wrong_class():
     assert exc_info.value.args[0].startswith(
         "Bad CaosDBServerConnection implementation.")
     assert ("The `implementation` callable did not return an instance of "
-        "CaosDBServerConnection.") in exc_info.value.args[0]
+            "CaosDBServerConnection.") in exc_info.value.args[0]
 
 
 def test_missing_auth_method():
@@ -262,7 +262,8 @@ def test_missing_password():
     connection.configure(implementation=setup_two_resources,
                          password_method="plain")
     connection._authenticator.auth_token = "[test-auth-token]"
-    assert connection.retrieve(["some"]).headers["Cookie"] == "SessionToken=%5Btest-auth-token%5D;"
+    assert connection.retrieve(
+        ["some"]).headers["Cookie"] == "SessionToken=%5Btest-auth-token%5D;"
 
     connection.configure(implementation=setup_two_resources,
                          password_method="plain")
@@ -274,11 +275,13 @@ def test_auth_token_connection():
     connection = configure_connection(auth_token="blablabla",
                                       password_method="auth_token",
                                       implementation=setup_two_resources)
-    connection.retrieve(["some"]).headers["Cookie"] == "SessionToken=blablabla;"
+    connection.retrieve(
+        ["some"]).headers["Cookie"] == "SessionToken=blablabla;"
 
     connection._logout()
     with raises(LoginFailedException) as cm:
-        connection.retrieve(["some"]).headers["Cookie"] == "SessionToken=blablabla;"
+        connection.retrieve(
+            ["some"]).headers["Cookie"] == "SessionToken=blablabla;"
     assert cm.value.args[0] == ("The authentication token is expired or you "
                                 "have been logged out otherwise. The "
                                 "auth_token authenticator cannot log in "